How to add referer flag to yt-dlp?

[BosseB]

I am trying to use yt-dlp to download live streaming video from a few sites, but when yt-dlp tries to find the m3u8 informatioin it exits after getting response "HTTP Error 403: Forbidden".
I am able to download using ffmpeg standalone but it is a mess dealing with all the ffmpeg arguments, so I would like to use yt-dlp instead.
If I do it with ffmpeg I have to add the arguments:

 -referer <url> -i <actual m3u8 url> -t <timout in seconds>

Can the same referer flag be applied to yt-dlp without setting the additional argument

 --downloader ffmpeg

[LZAA]

Do you need ' -t '?

[BosseB]

Do you need ' -t '?

Yes because I am using scripts to download 1 hour segments of a 24/7 stream using at jobs.
I can use timeout to force yt-dlp to quit after a set time (3600 s) but it leaves a .part video file, which then has to be converted to mp4.
But when I set yt-dlp to use ffmpeg as downloader I can also add the -t 3600 ffmpeg argument.
OTOH changing yt-dlp downloader will probably cause an issue with the arguments to use for the download, which yt-dlp is handling internally...

I am looking to simplify the rather complex scripting I have now where I code ffmpeg directly into something easier to use and understand, while at the same time producing the same end result.

As of now I have another script that runs immediately before the ffmpeg script starts and which digs out the m3u8 URL from the webpage and stuffs that into a file, which the main script reads to set the -referer and -i parameters respectively for ffmpeg.
Then follows conversion arguments to get the correct video size and quality etc. Pretty complex stuff.

PS: I got some help here as well as on the mail list as to how to do the ffmpeg coding.

[jagabo]

yt-dlp --referer "http..." "url"

[LZAA]

yt-dlp --referer "URL" --no-part ...

[BosseB]

yt-dlp --referer "http..." "url"

yt-dlp --referer "URL" --no-part ...

OK I tested by using this, where I have the same url twice:

yt-dlp --referer <url> <url> -o test.mp4

Now I get past the "HTTP Error 403: Forbidden" problem and there is a video created in format 1280x720 (too big).
So I added an additional parameter to reduce the video size:

yt-dlp -S 'res:500' --referer <url> <url> -o test.mp4

But it is still 1280x720...

And the created videos are only 24 seconds in length!
So the ffmpeg -t argument has to be added to yt-dlp in order to fix this such that a longer (1 hour) download can be done from the live stream.
Otherwise yt-dlp is not usable.

Currently I have to use the --downloader ffmpeg argument to be able to set the length of the video but I lose control of the formatting and get huge video file sizes..

Instead I must continue using ffmpeg rather than yt-dlp, which means I have to dig out the m3u8 url separately using another script call first and read it from disk to be used in the main script using the ffmpeg call.